准噶尔盆地石南地区J1s12砂组沉积相带展布及岩性圈闭识别

石南地区位于准噶尔盆地腹部,其J₁s₁²砂组为湖侵体系域沉积,砂体发育,储盖层配置良好,是该区岩性圈闭发育的有利层位。以井、震资料为基础并综合多种沉积参数，研究了该区J₁s₁²砂组的精细沉积相,并分析了岩性圈闭的主控因素,预测了岩性圈闭发育的有利区带，最后,以夏盐3井岩性圈闭作为实例,对其储盖组合、成藏条件进行了评价。

Sedimentary Facies Distribution and Lithologic Traps Recognitionof J1s12 Formation in the Area of Shinan, Junggar Basin

The area of Shinan is located in the Central Junggar basin, the J₁s¹₂ formation is the favorable bed for lithologic traps prospecting and belongs to the transgressive systems tract, with lots of sand body and a good assemblage of reservoir and cap rocks. Base on the well logging and seismic data, this paper studied the delicate sedimentary facies of the J₁s¹₂ formation using various sedimentation parameters, analyzed the main control factors for forming lithologic traps, and predicted the favorable zones for prospecting. It also takes the lithologic trap of Xiayan 3 well as an example to assess the assemblage of reservoir and cap rocks and the pay condition.